<template>
    <div class="sidebar">
        <el-menu class="sidebar-el-menu" :default-active="onRoutes" :collapse="collapse" background-color="#324157"
            text-color="#bfcbd9" active-text-color="#20a0ff" unique-opened router>
            <template v-for="item in items">
                <template v-if="item.subs">
                    <el-submenu :index="item.index" :key="item.index">
                        <template slot="title">
                            <i :class="item.icon"></i><span slot="title">{{ item.title }}</span>
                        </template>
                        <el-menu-item v-for="(subItem,i) in item.subs" :key="i" :index="subItem.index">
                            {{ subItem.title }}
                        </el-menu-item>
                    </el-submenu>
                </template>
                <template v-else>
                    <el-menu-item :index="item.index" :key="item.index">
                        <i :class="item.icon"></i><span slot="title">{{ item.title }}</span>
                    </el-menu-item>
                </template>
            </template>
        </el-menu>
    </div>
</template>

<script>
    import bus from '../common/bus';
    export default {
        data() {

            return {
                collapse: false,
                items: [
                    {
                        icon: 'el-icon-setting',
                        index: 'dash',
                        title: '系统首页'
                    },
                    {
                        icon: 'el-icon-tickets',
                        index: '1',
                        title: '网络配置',                    
                            subs: [
                                {
                                    icon: 'el-icon-tickets',
                                    index: 'network',
                                    title: '有线配置'
                                },
                                {
                                    icon: 'el-icon-tickets',
                                    index: 'network_wireless',
                                    title: '无线配置'
                                }
                            ]
                    },
                    {
                        icon: 'el-icon-setting',
                        index: 'lora',
                        title: 'LoRa配置'
                    },
                    {
                        icon: 'el-icon-setting',
                        index: 'lorabrg',
                        title: 'LoRa网桥配置'
                    },
                    {
                        icon: 'el-icon-view',
                        index: '',
                        title: '监控'
                    },
                    {
                        icon: 'el-icon-service',
                        index: '',
                        title: '关于我们'
                    }
                ]
            }
        },

        mounted() {
            let self = this;   
            // let url = new URL("http://" + location.hostname + ":3000/net");
            let url = new URL("http://192.168.10.120:3000/netcfg");

            fetch(url,
                {
                    method:"GET",
                     headers: {
                        "Content-Type": "application/json"
                    }
                }).then(function(res){
                    return res.json()
                }).then(function(res){
                    if(res.iface.length==1){
                        self.items=[
                        {
                            icon: 'el-icon-setting',
                            index: 'dash',
                            title: '系统首页'
                        },
                        {
                            icon: 'el-icon-tickets',
                            index: '1',
                            title: '网络配置',                    
                                subs: [
                                    {
                                        icon: 'el-icon-tickets',
                                        index: 'network',
                                        title: '有线配置'
                                    }
                                ]
                        },
                        {
                            icon: 'el-icon-setting',
                            index: 'lora',
                            title: 'LoRa配置'
                        },
                        {
                            icon: 'el-icon-view',
                            index: '',
                            title: '监控'
                        },
                        {
                            icon: 'el-icon-service',
                            index: '',
                            title: '关于我们'
                        }
                    ]
                    }
                })
        },
        computed:{
            onRoutes(){
                return this.$route.path.replace('/','');
            }
        },
        created(){
            // 通过 Event Bus 进行组件间通信，来折叠侧边栏
            bus.$on('collapse', msg => {
                this.collapse = msg;
            })
        }
    }
</script>

<style scoped>
    .sidebar{
        display: block;
        position: absolute;
        left: 0;
        top: 70px;
        bottom:0;
        overflow-y: scroll;
    }
    .sidebar::-webkit-scrollbar{
        width: 0;
    }
    .sidebar-el-menu:not(.el-menu--collapse){
        width: 250px;
    }
    .sidebar > ul {
        height:100%;
    }
</style>
